The new LRR3 (third-generation Long Range Radar) automotive radar sensor system from Robert Bosch GmbH will use a chip from Infineon Technologies’ RASIC (Radar System IC) product family. Bosch developed the LRR3 for adaptive cruise control at ranges up to 250 m. It is also used for predictive radar-based safety functions such as protective brake assist systems, collision warning features, and automatic emergency braking.
Infineon uses silicon-germanium (SiGE) technology for its radar chip, enabling it to be smaller and more cost-effective that possible with components based on the more expensive gallium-arsenide technology. The chips in the RASIC family were developed and qualified specially for use in cars. Bosch and Infineon have achieved full automotive qualification for the LRR3 radar system also. Volume manufacture of the chip at Infineon is scheduled for the end of 2008, with production startup at Bosch planned for early 2009.
“The LRR3 radar system was specially developed for high-volume driver assistance systems, and for the first time makes use of silicon-germanium as the semiconductor material,” commented Dirk Freundt, LRR3 project manager for Bosch. “By employing Infineon’s innovative radar chips and avoiding the use of costly special-purpose semiconductors, it has been possible to significantly enhance the functionality of the Bosch sensor, and considerably reduce system costs. Bosch is also looking to bring the radar sensor and its functions into the midrange and compact class, where it could soon be part of a car’s standard equipment.”